Theres no mistaking the distinct voicewhether throbbing, singing, or screamingof an electric guitar. How does one instrument produce so many different sounds? We visit with Bay Area electric guitarists Ava Mendoza and Henry Kaiser, plus Subway Guitars very own Fat Dog, to explore the components of this versatile instrument, getting down to pick-ups, pots, and pedals that make it sing.

In November 2009, Exploratorium After Dark welcomed particle physicist Dr. Austin Richardsaka Dr. MegaVolt. Under the Palace of Fine Arts rotunda, he jousted with a high-voltage Tesla coil, which generated 200,000 volts of electricity and shot 14-foot-long arcs of lightning through the air.

Meet Dr. Ethan Brodsky from the U. of Wisconsin, who advised a group of undergraduate students in the design and build of an electric snowmobile. Video produced by Ice Stories correspondent Zoe Courville.

Dr. Jim Tour, a chemist at Rice University, builds the worlds smallest vehicles. He calls them nanocars, and he thinks these tiny vehicles might lead to nano-sized factories. Well also hear from University of Florida graduate student Diane Hickey, who will tell us some of the interesting reactions shes run into when explaining nanotechnology.

Watch as the best teachers on the planet battle it out for the title of Iron Science Teacher. In this zany competition teachers will have ten minutes to create a science activity. This weeks secret ingredient: Pencils

Webcasts made possible through the generosity of the Gordon and Betty Moore Foundation, the Jim Clark Endowment for Internet Education, the McBean Family Foundation.

Bandwidth and infrastructure support for connectivity to the California Research and Education Network and to other Internet2-connected networks provided by the Corporation for Educational Networks Initiatives in California (CENIC).